Felix has been competing on the Irish senior team for over ten years, and is based at the Irish training base in Majorca. Both of Felix’s parents are from Dublin. He won five British junior titles and famously beat Chris Hoy at the 2010 European Championships before declaring for Ireland in 2012 when he turned senior. In 2017 he won Madison gold at the World Cup in California and won gold in Scratch at the Glasgow World Cup in 2019. He and Mark Downey were 11th in Madison at the 2019 World Championships. Felix set up Trackproject.ie team, with teammate Fintan Ryan, to support Irish track riders in their bid to qualify for the Olympics.